Doraemon the Movie: Nobita's New Dinosaur

Nobita discovers a dinosaur egg fossil and, with Doraemon's help, two Sinosauropteryx emerge, which he names Kyu and Myu. They grow rapidly and eventually outgrow Nobita's room, leading to a series of adventures as they try to find their way back home. Along the way, they meet other dinosaurs and are helped by a Futabasaurus, who takes them to an island inhabited by similar species. The group soon learns that Kyu and Myu's time has come to an end, but with the help of Nobita and his friends, they're able to find a new way to return home, even if it means changing the course of history.